Wrong - IE8 uses its Standards Mode by default
This article is incorrect - IE8 renders pages in its new Standards Mode by default. If people can't be bothered to change their poorly written HTML to render this properly, *then* they can add a special META tag to tell IE8 to render the page in Compatibility Mode (the same as IE7). This is a good thing.
Also, if the HTML is so bad it causes the Standards Mode engine to go crazy, the page will automatically be re-loaded in Compatibility Mode.
I've been using IE8 for months at work now, and have had very few problems. If there were Firefox-like addins such as AdBlock I'd consider getting rid of Firefox. Sadly that seems unlikely. But IE8 is a good step on from IE7, and will hopefully lead to IE6 being no more.